Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(((T ∧ r) ↔ (T ∧ r)) ∧ r)

⇒ logic.propositional.truezeroand

¬(((T ∧ r) ↔ r) ∧ r)